Combined harrow and cultivator.



No. 722.261. PATBNTED MAR. 10, 1903. -.s.. R. STEWART.

COMBINED HARROW AND CULTIVATOR.

APPLICATION FILED JUNE 21, 1902.

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SAMUEL R. STEWART, OF COOPER HEIGHTS, GEORGIA.

COMBINED HARROW AND CULTIVATOR.

SPECIFICATION forming part of Letters Patent No. 722,261, dated March10, 1903.

e Application led June 2l, 1902. Serial No. 112,676. (No model.)

To @ZZ whom t may concern,.-

Beit known that I, SAMUEL R. STEWART, a citizen of the UnitedStates,residing at Cooper Heights, in the county of Walker and State ofGeorgia,have invented a new and useful Combined Harrow and Oultivator,of which the following is a specification.

This invention is a combinedharrow and cultivator, the object being toprovide a simple and efficient combination device capable of a quick andeasy adjustment whereby not only the width of the space cultivated canbe increased or decreased at will, but also the furrow which eachindividual plow cuts may be increased or diminished simultaneous withthe increase of the width of the cultivator and harrow as a whole.

With these objects in view the invention consists in the peculiarconstruction of the several parts and their novel combination andarrangement, all of which will be fully described hereinafter andpointed out in the claims.

In the drawings forming a part of this specification, Figure 1 is aperspective view of a cultivator constructed in accordance with myinvention. Fig. 2 is a top plan View partly in section. Fig. 3is asection on the line 3 3 of Fig. 2. Fig. 4 is a sectional detail viewillustrating the manner of locking the adjusting-lever, and Fig. 5 is adetail perspective View of one of the arms connected to the shank of thecultivator-shovel.

In carrying out my invention I employ a main or central beam A, having acrossebeam B connected thereto at its forward end, said cross-beamhaving the side beams O pivotally connected at its opposite ends, saidside beam C consisting of each of the parallel upper and lower piecesO', as most clearly shown in Figs. l and 3.

Brace-beams D extend from the rear portion of the central beam A toapproximately the central portion of the side beams C. As stated before,each side beam is composed of two members, the upper and lower one; butit will of course be understood that one member only may be employed, ifso desired. Oultivator-teeth E have a shank E', which projects upwardlythrough the members C of the side beams, there being a series of teethconnected to each side beam, and between the members C an arm F isattached to the shank E by means of a set-screw F', the inner ends ofsaid arms being bifurcated, as shown at F2, for the purpose of receivingthe shifting bars G, the arms and bars being pivotally connected bymeans of bolts G'. Each shifting bar G has an inwardly-projectingextension II, to which is pivotally connected the link I, the said linksbeing pivotally connected at their forward ends to the lower end of alever K, as shown at K in Fig. 4, said lever passing through a slot K2,produced in the central beam A, and being pivoted at K3 betweendepending lugs formed integral with the under side of the central beamA. This lever K has a longitudinal opening K4 to permit the lever towork back and forth over a toothed segment L, which is engaged bya pawlM, pivoted in the opening K4 and normally held in engagement With thetoothed segment by means of a spring N.

The handles O are attached to the central beam by means of the same boltwhich serves as a pivot for the lever K, said handles being bracedbymeans of bars O', extending from the rear end of the main beam A to thesaid handles O, as most clearly shown in Fig. I.

Wheneverit is desired to increase the width ofthe harrow,thelever K isthrown forwardly, thereby projecting its lower end rearwardly, and thisaction spreads the links I, which in turn shift the bars G and alsospread the side beams C. Each shifting bar being parallel with itsadjacent side beam,it is manifest that as the side beams are opened orclosed the angle of the cultivator tooth is shifted or changed, so thatas the harrow or cultivator is widened the individual furrows cut byeach tooth will be widened. Brace-beams D per mit the adjustment of theside beams and serve to steady their movements.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent of the United States, is-

l. A cultivator comprising side beams provided with a series of pivotedteeth, the arms connected to the said teeth, the shift-bar connectingthe said arms, and the leverfor operating the said shift-bar,substantially as described.

2. A combined harrow and cultivator comprising a central beam, the sidebeams, the

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cultivator-teeth having their shanks pivoted in the said side beams, thearms connected t0 the said Shanks, the shifting bars connected to thesaid arms, the operating-lever pivoted to the central beam, and thelinks connecting said lever and shifting bars, substantially asdescribed.

3. In a combined harroW and cultivator the combination with the centralbeam, of the side beams capable of adjustment, the lever pivoted in thecentral beam, the links con-

